Eventually, but strong AI just means intelligence matching or exceeding human intelligence. We already have billions of entities with human intelligence, and it is taking us a long time to produce something smarter than ourselves. If the first strong AI is just a little smarter than us, and if it chooses to put its energy toward the creation of more AIs, then maybe it will eventually produce something smarter than itself. But it's not so simple that we just get to the singularity straight away.